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  • JavaScript String substr() Method - W3Schools
    The substr() method extracts a part of a string The substr() method begins at a specified position, and returns a specified number of characters The substr() method does not change the original string To extract characters from the end of the string, use a negative start position
  • String. prototype. substr() - JavaScript | MDN - MDN Web Docs
    A string's substr() method extracts length characters from the string, counting from the start index If start >= str length , an empty string is returned If start < 0 , the index starts counting from the end of the string
  • std::basic_string lt;CharT,Traits,Allocator gt;:: substr - Reference
    Returns a substring [pos,pos + count) If the requested substring extends past the end of the string, i e the count is greater than size()- pos (e g if count == npos), the returned substring is [pos,size ()) 1) Equivalent to return basic_string(*this, pos, count); 2) Equivalent to return basic_string(std::move(*this), pos, count);
  • C++中substr ()函数用法详解 - CSDN博客
    substr函数是C++中的一个成员函数，用于复制源字符串的子字符串。它有两种形式：s substr(pos, len)和s substr(pos)。第一种形式返回从索引为pos开始的len个字符的拷贝，如果不指定len，则默认拷贝从pos到字符串末尾
  • PHP: substr - Manual
    Returns the portion of string specified by the offset and length parameters The input string If offset is non-negative, the returned string will start at the offset 'th position in string, counting from zero For instance, in the string ' abcdef ', the character at position 0 is ' a ', the character at position 2 is ' c ', and so forth
  • What is the difference between substr and substring?
    substr() allows you to specify the maximum length to return; substring() allows you to specify the indices and the second argument is NOT inclusive; There are some additional subtleties between substr() and substring() such as the handling of equal arguments and negative arguments
  • JavaScript: String substr() method - TechOnTheNet
    This JavaScript tutorial explains how to use the string method called substr () with syntax and examples In JavaScript, substr () is a string method that is used to extract a substring from a string, given a start position and a length
  • JavaScript String substr () Method - GeeksforGeeks
    The substr() method in JavaScript extracts a portion of a string, starting from a specified index position and extending for a given number of characters This method was traditionally used to extract a part of a string, however, the method is now considered outdated, and the substring() or slice() methods are recommended as alternatives
  • String. prototype. substring() - JavaScript | MDN - MDN Web Docs
    substring() extracts characters from indexStart up to but not including indexEnd In particular: If indexEnd is omitted or undefined, substring() extracts characters to the end of the string If indexStart is equal to indexEnd, substring() returns an empty string





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